Research notes recorded by Edgar S. McFadden from 1925 to 1926. Research was conducted on oats varieties: Mark, Richland, Mark, wheat varieties: Acme, Vernal, Marquis, Hope, Webster, Kota, and Quality. Also included is data on smut experiments.

Research notes recorded by Edgar S. McFadden in a U.S. Department of Agriculture Bureau of Plant Industry Agronomic Notes book. Data is composed of research on wheat varieties: Marquis, Preston, and Kota. Also included is data on wheat rust.

Research notes recorded by Edgar S. McFadden in a U.S. Department of Agriculture Bureau of Plant Industry Agronomic Notes book. Data is composed of research on wheat verities: Supreme, Hope, Power, Ceres, Reward, Haynes, and Marquis.

Research notebook for N.E. Hansen's experiments with alfalfa for 1911, with notes regarding 1909 and 1910 experiments. Varieties studied include Omsk, Cossack, Samara, North Sweden, Obb Siberia, and Cherno.

N.E Hansen's research notebook regarding field experiments for grasses and grains in 1888 and 1889. The field consisted of 66 plots. He studied 92 varieties in total including: 22 grasses, 9 clovers, 20 wheats, 23 oats, 14 barleys, 1 rye. Hansen was assisted by John M. Aldrich, Alvah George Cross, and J.G. Ross.

Field research notebook of N. E. Hansen. Alfalfa and clover grasses planted May 1908. Varieties studied originated from Norway, Turkistan, Russia, Siberia, Sweden, Lapland, and South America. Several varieties came from the Moscow Agricultural College (Moscow Timiryazev Agricultural Academy).

South Dakota Agricultural Experiment Station field research notebook of N.E. Hansen. Research on varieties of soybeans, alfalfa, and kochia were conducted in Highmore, SD and Brookings, SD during 1943. Handwritten.

Research notes recorded by Edgar S. McFadden. Research was conducted on barley verities: Success, Hanna, Gold, Minn 105, Odinbrucker, Gatami, Nepal, Hamchen; winter wheat varieties: Turkey, Red Chaff, Kharkov; Rye varieties; and Oats varieties: Ruakura, White Tartarian, Acme, Pelissur, Black Persian. Also included is correspondence between McFadden and J.A. Clark, Assistant Agronomist in charge of Western Wheat Investigation and the U.S. Department of Agriculture, Bureau of Plant Industry.

Research notes recorded by Edgar S. McFadden on cereal breeding for the prairie northwest. Research was conducted on barley varieties: Success, Nepal, Minn 105, Oderbrucker, Gatami, Hanna, Gold, and Hancher; corn varieties: Oea Hirta, Hopi Maiz, Alta, and Ree Flour; winter wheat varieties: Hope, Lutercens, and Buffum. Also included are notes on garden vegetables: spinach, lettuce, onion, dill, beets, carrots, parsnips, beans, cucumber, muskmelon, and watermelon.

Research notebook for N.E. Hansen's experiments with grasses, clovers, and forage that were conducted near the Hunter Salzer Farm by Mellet, South Dakota in 1897 with remarks about 1896. The first part of the notebook discusses his experiments on 38 plots, which included numerous varieties of grasses, oats, wheat, alfalfa, clovers, and corn. The notebook also details his research on an additional 64 plots of grasses and forage plants. The notes include his assessments of the varieties and comments regarding the weather.

Research notes recorded by Edgar S. McFadden in a U.S. Department of Agriculture Bureau of Plant Industry Agronomic Notes book. Data is composed of research on wheat varieties: Marquis, Preston, and Kota. Also included is data on wheat rust.

Research notes recorded by Edgar S. McFadden in a U.S. Department of Agriculture Bureau of Plant Industry Agronomic Notes book on field plots. Data is composed of research on oats varieties: Iogold, Cole, 60-day, Edkin, Richland, Gopher, Silvermine, Swedish Select, and Green Russian; wheat varieties: Power, Pierson, Mindum, Nodak, Kubanka, Acme, Akrona, Reliance, Kota, Marvel, Preston, Marquis, Supreme, Ceres, Hope, Progress, Marquillo, Reward, Ruby, and Quality; and barley varieties: Orel, Hamchen, Svanhals, Nepal, Wind Pedigreed, Trebi, Oderbrucker, Manchuria, New Era, Odessa, and Dryland.

Research notes recorded by Edgar S. McFadden in a U.S. Department of Agriculture Bureau of Plant Industry Agronomic Notes book on field plots. Data is composed of research on winter wheat varieties: Minturki, Proso, Turqhai, Kharkof, Beloglina, Minhardi, and Eureka; spring wheat verities: Quality, Reward, Marquillo, Marquis, Hope, Kota, Reliance, Akrona, Acme, Kubanka, Nodak, Mindum, and Power; barley varieties: White Smyrna, Dryland, New Era, Odessa, Nepal, Vaughn, Glabron, Trebi, Manchuria, Velvet, Oderbrucker, Hamchen, Svanhals; and oat varieties: Cole, 60-day, Richland, Iogold, Edkin, Iowar, Gopher, Fowlds, Minrus, Anthony, Silvermine, Rainbow, and Green Russian.

Research notes recorded by Edgar S. McFadden in a U.S. Department of Agriculture Bureau of Plant Industry Agronomic Notes book. Data is composed of research on wheat verities: Marquis, Reliance, Kanred, Ceres, Kota, Quality, Hope, Emmer, Marquillo, Webster, Kubanka, Pentad, Mindum, Mondak, Nodak, Akrona, Acme, Armantha, Chernouska, and Kota.

Research notebook for N.E. Hansen's experiments with alfalfa, which were conducted throughout South Dakota in 1913. Places include Faith, Ipswich, Isabel, Kadoka, Lemmon, Miller, Mobridge, Pierre, Vivian, and Winner. Varieties studied include Samara, Cossack, Cherno, and Semipalatinsk.